While most researchers who use evolutionary theory to investigatehuman nature especially human sexuality describe themselves as ``interactionists'', there is no clear consensus on the meaning of thisterm in this context. By interactionism most people in the fieldmean something like, both nature and nurture ``count'' in thedevelopment of human psychology and behavior. Nevertheless, themultidisciplinary nature of evolutionary psychology results in a widevariety of interpretations of this general claim. Today, mostdebates within evolutionary psychology about the innateness of agiven behavioral characteristic or over (...) its development turn as muchon which conception of ``innateness'' and ``interactionism'' theresearcher holds as on any empirical data they might derive. (shrink)